Question

A helicopter rotor blade can be considered a long thin rod, as
shown in figure below. If each of the three rotor helicopter blades
is L = 3.66 m long and has a mass of m = 164 kg, calculate the
moment of inertia of the three rotor blades about the axis of
rotation.
How much torque must the motor apply to bring the blades up to a
speed of 5.93 revolutions per second in 8.37 s?